Hydrogen-bond-directed assembly of one-dimensional and two-dimensional polymeric copper(II) complexes with trifluoroacetate and hydroxypyridine as ligands: syntheses and structural investigations

1993 ◽  
Vol 32 (26) ◽  
pp. 5981-5989 ◽  
Author(s):  
Steven R. Breeze ◽  
Suning Wang
Keyword(s):  
Hydrogen Bond ◽  
Directed Assembly ◽  
Two Dimensional ◽  
Structural Investigations ◽  
One Dimensional

Two single-enantiomer amidophosphoesters: a database study on the chirality of (O)2P(O)(N)-based structures

2019 ◽  
Vol 75 (1) ◽  
pp. 77-84 ◽  
Author(s):  
Fahimeh Sabbaghi ◽  
Mehrdad Pourayoubi ◽  
Marek Nečas ◽  
Krishnan Damodaran
Keyword(s):  
Hydrogen Bond ◽  
Nmr Spectra ◽  
Chemical Shifts ◽  
Coupling Constants ◽  
Two Dimensional ◽  
One Dimensional ◽  
Space Groups ◽  
Structural Database ◽  
Graph Set ◽  
Hydrogen Bonded

The crystal structures of two single-enantiomer amidophosphoesters with an (O)2P(O)(N) skeleton, i.e. diphenyl [(R)-(+)-α-methylbenzylamido]phosphate, (I), and diphenyl [(S)-(−)-α-methylbenzylamido]phosphate, (II), both C20H20NO3P, are reported. In both structures, chiral one-dimensional hydrogen-bonded architectures, along [010], are mediated by N—H...OP interactions. The statistically identical assemblies include the noncentrosymmetric graph-set motif C(4) and the compounds crystallize in the chiral space group P21. As a result of synergistic co-operation from C—H...O interactions, a two-dimensional superstructure is built including a noncentrosymmetric R 4 4(22) hydrogen-bonded motif. A Cambridge Structural Database survey was performed on (O)2P(O)(N)-based structures in order to review the frequency of space groups observed in this family of compounds; the hydrogen-bond motifs in structures with chiral space groups and the types of groups inducing chirality are discussed. The 2,3 JX –P (X = H or C) coupling constants from the NMR spectra of (I) and (II) have been studied. In each compound, the two diastereotopic C6H5O groups are different, which is reflected in the different chemical shifts and some coupling constants.

Novel one- and two-dimensional ZnIIcoordination polymers based on a versatile 3,6-bis(pyridin-4-yl)phenanthrene-9,10-dione ligand

2015 ◽  
Vol 71 (12) ◽  
pp. 1089-1095
Author(s):  
Guoxia Jin ◽  
Jia Wang ◽  
Qidi Wu ◽  
Zheng Han ◽  
Jianping Ma
Keyword(s):  
Hydrogen Bond ◽  
Hydrothermal Reaction ◽  
Three Dimensional ◽  
Two Dimensional ◽  
One Dimensional ◽  
Hydrogen Bond Interactions ◽  
Dimensional Network ◽  
Left And Right ◽  
Solvent Systems ◽  
Single Crystal Analysis

Two new ZnIIcoordination polymers, namely,catena-poly[[dibromidozinc(II)]-μ-[3,6-bis(pyridin-4-yl)phenanthrene-9,10-dione-κ2N:N′]], [ZnBr2(C24H14N2O2)]n, (1), and poly[[bromido[μ3-10-hydroxy-3,6-bis(pyridin-4-yl)phenanthren-9-olato-κ3N:N′:O9]zinc(II)] hemihydrate], {[ZnBr(C24H15N2O2)]·0.5H2O}n, (2), have been synthesized through hydrothermal reaction of ZnBr2and a 60° angular phenanthrenedione-based linker,i.e.3,6-bis(pyridin-4-yl)phenanthrene-9,10-dione, in different solvent systems. Single-crystal analysis reveals that polymer (1) features one-dimensional zigzag chains connected by weak C—H...π and π–π interactions to form a two-dimensional network. The two-dimensional networks are further stacked in anABABfashion along theaaxis through C—H...O hydrogen bonds. LayersAandBcomprise left- and right-handed helical chains, respectively. Coordination polymer (2) displays a wave-like two-dimensional layered structure with helical chains. In this compound, there are two opposite helical –Zn–HL– chains [HLis 10-hydroxy-3,6-bis(pyridin-4-yl)phenanthren-9-olate] in adjacent layers. The layers are packed in anABABsequence and are further connected through O—H...Br and O—H...O hydrogen-bond interactions to form a three-dimensional framework. In (1) and (2), the mutidentateLand HLligands exhibits different coordination modes.

An Extended Network via Hydrogen Bond Linkage of the Linear Coordination Polymer [Cd(μ-dptz)(NO3)2]∞

2002 ◽  
Vol 2002 (5) ◽  
pp. 247-249 ◽  
Author(s):  
Miao Du ◽  
Xian-He Bu ◽  
Kumar Biradha ◽  
Mitsuhiko Shionoya
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Coordination Polymer ◽  
Two Dimensional ◽  
One Dimensional ◽  
Linear Coordination

The crystal structure of [Cd(μ-dptz)(NO3)2]∞ reveals a neutral one-dimensional coordination polymer exhibiting a two-dimensional architecture through inter-chain hydrogen-bonding.

Proton-transfer compounds with 4-amino-N-(4,6-dimethylpyrimidin-2-yl)benzenesulfonamide (sulfamethazine): the structures and hydrogen bonding in the salts with 5-nitrosalicylic acid and picric acid

2013 ◽  
Vol 69 (5) ◽  
pp. 538-543 ◽  
Author(s):  
Graham Smith ◽  
Urs D. Wermuth
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Proton Transfer ◽  
Picric Acid ◽  
Dimensional Structure ◽  
Two Dimensional ◽  
Sulfa Drug ◽  
One Dimensional ◽  
Π Interactions ◽  
Proton Transfer Compounds

The structures of the anhydrous proton-transfer compounds of the sulfa drug sulfamethazine with 5-nitrosalicylic acid and picric acid, namely 2-(4-aminobenzenesulfonamido)-4,6-dimethylpyrimidinium 2-hydroxy-5-nitrobenzoate, C12H15N4O2S+·C7H4NO4−, (I), and 2-(4-aminobenzenesulfonamido)-4,6-dimethylpyrimidinium 2,4,6-trinitrophenolate, C12H15N4O2S+·C6H2N3O7−, (II), respectively, have been determined. In the asymmetric unit of (I), there are two independent but conformationally similar cation–anion heterodimer pairs which are formed through duplex intermolecular N+—H...Ocarboxylateand N—H...Ocarboxylatehydrogen-bond pairs, giving a cyclic motif [graph setR22(8)]. These heterodimers form separate and different non-associated substructures through aniline N—H...O hydrogen bonds, one one-dimensional, involving carboxylate O-atom acceptors, the other two-dimensional, involving both carboxylate and hydroxy O-atom acceptors. The overall two-dimensional structure is stabilized by π–π interactions between the pyrimidinium ring and the 5-nitrosalicylate ring in both heterodimers [minimum ring-centroid separation = 3.4580 (8) Å]. For picrate (II), the cation–anion interaction involves a slightly asymmetric chelating N—H...OR21(6) hydrogen-bonding association with the phenolate O atom, together with peripheral conjointR12(6) interactions between the same N—H groups and O atoms of theortho-related nitro groups. An inter-unit amine N—H...Osulfonehydrogen bond gives one-dimensional chains which extend alongaand inter-associate through π–π interactions between the pyrimidinium rings [centroid–centroid separation = 3.4752 (9) Å]. The two structures reported here now bring to a total of four the crystallographically characterized examples of proton-transfer salts of sulfamethazine with strong organic acids.

Two different one-dimensional CdIIhalide coordination polymers constructed through bridging carboxylate ligands

2015 ◽  
Vol 71 (11) ◽  
pp. 979-984 ◽  
Author(s):  
Xue-Li Hou ◽  
Hui-Ting Wang
Keyword(s):  
Hydrogen Bond ◽  
Water Molecules ◽  
Zigzag Chain ◽  
Two Dimensional ◽  
Carboxylate Ligands ◽  
One Dimensional ◽  
Hydrogen Bond Interactions ◽  
Carboxylate Groups ◽  
Dimensional Network ◽  
Halide Complexes

Two cadmium halide complexes,catena-poly[[chloridocadmium(II)]-di-μ-chlorido-[chloridocadmium(II)]-bis[μ2-4-(dimethylamino)pyridin-1-ium-1-acetate]-κ3O:O,O′;κ3O,O′:O], [CdCl2(C9H12N2O2)]n, (I), andcatena-poly[1-cyanomethyl-1,4-diazoniabicyclo[2.2.2]octane [[dichloridocadmium(II)]-μ-oxalato-κ4O1,O2:O1′,O2′] monohydrate], {(C8H15N3)[CdCl2(C2O4)]·H2O}n, (II), were synthesized in aqueous solution. In (I), the CdIIcation is octahedrally coordinated by three O atoms from two carboxylate groups and by one terminal and two bridging chloride ligands. Neighbouring CdIIcations are linked together by chloride anions and bridging O atoms to form a one-dimensional zigzag chain. Hydrogen-bond interactions are involved in the formation of the two-dimensional network. In (II), each CdIIcation is octahedrally coordinated by four O atoms from two oxalic acid ligands and two terminal Cl−ligands. Neighbouring CdIIcations are linked together by oxalate groups to form a one-dimensional anionic chain, and the water molecules and organic cations are connected to this one-dimensional zigzag chain through hydrogen-bond interactions.

A one-dimensional self-gravitating stellar gas

1966 ◽  
Vol 25 ◽  
pp. 46-48 ◽  
Author(s):  
M. Lecar
Keyword(s):  
Gravitational Field ◽  
Phase Space ◽  
Motion Picture ◽  
Space Distribution ◽  
Two Dimensional ◽  
One Dimensional ◽  
Phase Space Distribution ◽  
Dimensional Phase Space ◽  
The Mean

“Dynamical mixing”, i.e. relaxation of a stellar phase space distribution through interaction with the mean gravitational field, is numerically investigated for a one-dimensional self-gravitating stellar gas. Qualitative results are presented in the form of a motion picture of the flow of phase points (representing homogeneous slabs of stars) in two-dimensional phase space.

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